[MAME]

Seibu Mahjong games (distributed by Tecmo)

CPU: V30 D70116C-10
Sound: Z80 YM3812 M6295
OSC: 12.000MHz 16.000MHz 7.15909MHz


PCB Layout

|---------------------------------------------------------------|
|LA4460  YM3812  M6295  E-JAN.U0911 6116        Z80A 7.15909MHz |
|                                                               |
|                                    5.U1016                    |
|                SEI0100                        PAL             |
|                                                               |
|                           E-JAN.U064          4.U061          |
|                                                      SEI0160  |
|           SEI0181                             3.U063          |
|                                                               |
|                                                               |
|           PAL             SEI0200           6264        PAL   |
|                           TC110G21AF                          |
|           82S135.U083                 PAL   6264              |
|                                                               |
|  DSW     DSW                                                  |
|                                              62256     62256  |
|  E-JAN.U078                PAL                                |
|                                                               |
| PAL                        PAL               1.U022    2.U023 |
|            SEI0210                                            |
| PAL                        PAL                                |
|                                                               |
| 12MHz                16MHz        V30                         |
|---------------------------------------------------------------|
Notes:
      V30 clock - 8.000MHz [16/2]
      Z80 clock - 3.579545MHz [7.15909/2]
      YM3812 clock - 3.579545MHz [7.15909/2]
      M6295 clock - 1.000MHz [16/16], Pin 7 HIGH
      VSync - 60Hz
      HSync - 15.38kHz
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